
Accurate, Reliable, and Better Than Before
At RPO, we understand the value and importance of reliable equipment that's not only accurate, but consistent with meeting your expectations.
With this in mind, we've made improvements to the design of our Scratch-Dig Comparators; exceeding industry standards yet again.
Molded In-house
Certification Available
Clean Room Friendly
Support
Exclusive Support
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Exclusive Support
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RPO Scratch-Dig Comparator






















RPO Standard Product
Part Number: 2M1524
RPO's Scratch-Dig Comparator is essential for accurately and efficiently inspecting optical components to MIL-PRF-13830B standards. It ensures high-quality, reliable, and durable optical systems, which is critical for applications that demand the utmost precision and performance. By adhering to these standards, RPO continues to uphold its reputation for excellence in the optics industry by producing products to MIL-STD requirements, as well as other relevant industry standards.
Product Specifications
RPO Part Number: | 2M1524 |
Material: | Molded High Quality Plastic/Acrylic |
Dimensions: | 0.25"W x 4.62"L x 1.75"H with 2"L Handle |
Scratch Number: | 10, 20, 40, 60, 80, 120, 160 |
Dig Number: | 5, 10, 20, 40, 50, 70, 100 |
Additional Information:
Instructions For Use:
Under MIL-PRF-13803B compliant inspection conditions, hold the paddle adjacent to the optical element subject to inspection. To visually compare surface imperfections from the optical element, determine the dimension of the imperfection utilizing the incremental scaled on the paddle. Scratches are to be compared to the scale examples shown on the vertical bars, look for the label "Scratches" on the left side of the paddle when facing the operator. Digs are to be compared to the round scale examples immediately below the vertical bars, look for the label "Digs" on the left side of the paddle when facing the operator.
Cleaning Instructions:
Remove any debris from the S/D Comparator using compressed air only. Keep the S/D Comparator away from all solvents and inside the protective case when not in use.
Important Notice: This guide is intended to provide general assistance to operators in performing visual inspections and utilizing the Scratch/Dig Comparator in accordance with MIL-PRF-13803B standards. It is not a replacement for the full MILK-PRF-13803B specification, or any product-specific design or contractual requirements. Operators are advised to refer directly to the official MIL-PRF-13803B standard for complete and authoritative details. This guide is for support purposes only.
10
$159.99/ea
The minimum quantity available for order.
50
$129.99/ea
Our most frequently ordered quantity.
100
$99.99/ea
Increased savings when you order larger quantities.
250+
Contact Us
Please fill out the form below to receive pricing.
RPO Scratch-Dig Comparator
RPO Standard Product
Part Number: 2M1524
RPO's Scratch-Dig Comparator is essential for accurately and efficiently inspecting optical components to MIL-PRF-13830B standards. It ensures high-quality, reliable, and durable optical systems, which is critical for applications that demand the utmost precision and performance. By adhering to these standards, RPO continues to uphold its reputation for excellence in the optics industry by producing products to MIL-STD requirements, as well as other relevant industry standards.
Product Specifications
RPO Part Number: | 2M1524 |
Material: | Molded High Quality Plastic/Acrylic |
Dimensions: | 0.25"W x 4.62"L x 1.75"H with 2"L Handle |
Scratch Number: | 10, 20, 40, 60, 80, 120, 160 |
Dig Number: | 5, 10, 20, 40, 50, 70, 100 |
Looking to order?
Please fill out the form to start an order. Scratch-Dig Comparators are sold at a minimum quantity of 10. Please defer to the pricing table located above this form for an estimated cost of your order.
There is a FAQ table located beneath this form for any questions pertaining to your order. For any additional questions, or assistance with pricing, quantity, or delivery requirements, please contact us at sales@rpoptics.com.

FAQ
You can get your comparator certified by contacting a suitable company and mailing your equipment to them for certification. Contact RPO for recommendations.
At this time we do not offer samples. If you require less than our MOQ, please contact RPO for alternative options to purchase low volumes.
The packaging is made from a protective, scratch-free material that is soft, acid-free, and breathable.
The RPO Scratch/Dig Comparator is intended for regular use in a manufacturing environment. With typical wear and tear, the comparator is expected to exhibit best performance over 6 months to 1 year of regular use. To ensure continued accuracy in surface quality inspections, we recommend ordering replacements within this timeframe.
Yes, we do ship internationally!
Shipping time will vary depending on the quantity you order. Orders less than 250 will on average take 1-2 weeks. Orders of 250 up to 499 may take 3-4 weeks. For quantities of 500 and beyond, please call for current lead times.
If you need delivery by a specific date, or sooner than initially requested, please contact your representative.
For international shipments, please expect delivery time to be longer due to transit.
If you require less than our MOQ, please contact RPO for alternative options to purchase low volumes.